package com.sky.service.impl;

import com.sky.constant.StatusConstant;
import com.sky.entity.Orders;
import com.sky.mapper.DishMapper;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.WorkspaceService;
import com.sky.vo.BusinessDataVO;
import com.sky.vo.DishOverViewVO;
import com.sky.vo.OrderOverViewVO;
import com.sky.vo.SetmealOverViewVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * @author zzw
 * @date 2025/5/18
 * @description
 */
@Service
public class WorkspaceServiceImpl implements WorkspaceService {

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 根据时间段统计营业数据
     *
     * @param begin 开始时间
     * @param end   结束时间
     * @return BusinessDataVO
     */
    public BusinessDataVO getBusinessData(LocalDateTime begin, LocalDateTime end) {
        /*
          营业额：当日已完成订单的总金额
          有效订单：当日已完成订单的数量
          订单完成率：有效订单数 / 总订单数
          平均客单价：营业额 / 有效订单数
          新增用户：当日新增用户的数量
         */

        Map map = new HashMap();
        map.put("begin", begin);
        map.put("end", end);

        //查询总订单数
        Integer totalOrderCount = orderMapper.countByMap(map);

        map.put("status", Orders.COMPLETED);
        //营业额
        Double turnover = orderMapper.sumByMap(map);
        turnover = turnover == null ? 0.0 : turnover;

        //有效订单数
        Integer validOrderCount = orderMapper.countByMap(map);

        Double unitPrice = 0.0;

        Double orderCompletionRate = 0.0;
        if (totalOrderCount != 0 && validOrderCount != 0) {
            //订单完成率
            orderCompletionRate = validOrderCount.doubleValue() / totalOrderCount;
            //平均客单价
            unitPrice = turnover / validOrderCount;
        }

        //新增用户数
        Integer newUsers = userMapper.countByMap(map);

        return BusinessDataVO
                .builder()
                .turnover(turnover)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .unitPrice(unitPrice)
                .newUsers(newUsers)
                .build();
    }


    /**
     * 套餐总览
     *
     * @return SetmealOverViewVO
     */
    @Override
    public SetmealOverViewVO getOverviewSetmeals() {
        // 1.查询启售套餐数量
        Integer sold = setmealMapper.countByStatus(StatusConstant.ENABLE);

        // 2.查询停售套餐数量
        Integer discontinued = setmealMapper.countByStatus(StatusConstant.DISABLE);

        // 3.封装返回结果
        return SetmealOverViewVO
                .builder()
                .sold(sold)
                .discontinued(discontinued)
                .build();
    }

    /**
     * 菜品总览
     *
     * @return DishOverViewVO
     */
    @Override
    public DishOverViewVO getOverviewDishes() {
        // 1.查询启售菜品数量
        Integer sold = dishMapper.countByStatus(StatusConstant.ENABLE);

        // 2.查询停售菜品数量
        Integer discontinued = dishMapper.countByStatus(StatusConstant.DISABLE);

        // 3.封装返回结果
        return new DishOverViewVO(sold, discontinued);
    }

    /**
     * 订单管理数据
     *
     * @return OrderOverViewVO
     */
    @Override
    public OrderOverViewVO getOverviewOrders() {
        return orderMapper.getOverviewOrders();
    }
}
